The OpenFOAM Technology Primer comes with example source code and simulation cases. We have tried our best to provide information on both the software design and numerical method background required when programming in OpenFOAM. The example code and simulation cases we have prepared ourselves, which makes the book a standalone source of information, and not a copy or reinterpretation of any other material available online. We hope the book will end up being at least as useful to others as much as it was fun for us to write. If you happen to have comments or complaints, feel free drop us an email, open a thread on the forum or comment on the FAQ page. We will be happy to receive any feedback that makes the book, the accompanying code, or the example cases better.